Courses from 1000+ universities
17 years ago, Krishna Kumar started offering free PMP prep online. Today, it’s a leading digital upskilling platform that helps millions upskill in AI, cybersecurity, data science, and more.
600 Free Google Certifications
Fundamentals of Neuroscience, Part 1: The Electrical Properties of the Neuron
Organic Chemistry 1
Mountains 101
Organize and share your learning with Class Central Lists.
View our Lists Showcase
Master essential flow level formulas, area/volume calculations, and water/wastewater treatment plant calculations. TCEQ-approved for 20 credit hours toward Water and Wastewater Operator Licenses.
Explore the International Property Maintenance Code to prepare for ICC certification, covering minimum standards regulations, property sustainability, and quality of life requirements for municipal and county code officials.
Explore the responsibilities of court security officers, including threat mitigation, post roles, safety practices, and equipment use, while meeting Texas TCOLE Court Security Specialist Update requirements.
Explore common workplace health hazards including chemicals, asbestos, silica, and lead, while gaining skills in hazard identification, evaluation, and effective control and abatement methods.
Explore OSHA's Permit-Required Confined Space Standards for General Industry and Construction, covering 29 CFR 1910.146 and 1926 Subpart AA requirements in a concise one-day overview.
Learn to interact effectively with veterans in jail settings, covering military culture, mental health challenges, trauma-informed communication, and de-escalation techniques. Meets Texas TCOLE requirements.
Master workplace safety with OSHA's Lockout/Tagout standard, covering hazardous energy control programs, isolation procedures, employee training, and periodic inspections to protect workers during machinery maintenance.
Explore the fundamentals of lithium-ion batteries, including hazards, fire scene approaches, storage, disposal, and public education needs, through five interactive modules with scenarios and quizzes.
Explore fall hazard identification, evaluation, and prevention in construction. Gain awareness of OSHA Fall Protection Standards to control and abate risks effectively.
Master water system operations with TCEQ-approved training covering bacteriology, raw water quality, pretreatment, storage, and distribution—ideal prep for the Texas Class A water exam. (40 credit hours)
Refresh your knowledge of work zone traffic control standards, including new devices, setup recommendations, and scenario exercises tailored to TxDOT highway projects for safer motorist and worker access.
Master OSHA excavation and trenching management, covering safety requirements, hazard identification, soil analysis techniques, and protective system controls to ensure compliant operations.
Gain insights into safe Urban Search and Rescue operations in contaminated environments, covering essential skills and knowledge per National US&R Response System protocols, as a prerequisite for hands-on ILT training.
Explore FEMA's National Urban Search and Rescue Response System, covering task force functions, membership requirements, safety protocols, and post-deployment considerations for entry-level US&R members.
Gain insights into Urban Search and Rescue technical search functions, covering physical, visual, and technical methods in this 16-hour CBT prerequisite for the Technical Search Specialist ILT course.
Get personalized course recommendations, track subjects and courses with reminders, and more.